on Run Now. Part 1: What is an equipotential line and how is this simulation related to work and energy? 1) Turn on “Show Numbers” 2) Place a positive 1 nano-coulomb charge near the center of the screen. 3) In the lower left of the screen is a meter for indicating electric potential‚ in volts‚ created by the charge that you introduced. Record the voltage and turn on “Plot”. 4) This line is much like a line on a geologic topo map. Explain the similarity. In a topo map it shows all
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Questions: What is the polarity of the resting membrane potential (voltage)? You correctly answered: b. negative What does it mean that the voltage just inside the membrane is negative? You correctly answered: b. There are more negative charges than positive charges just inside the membrane. The membrane of most cells‚ including neurons‚ contains passive‚ open‚ K+ leak channels. Given the normal K+ concentrations and the resultant concentration gradient‚ which direction would K+ be expected to move
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Concepts 1. Electricity is the flow of electric charge (electrons). 2. Electric Charge is a property of subatomic particles. 3. Current is the movement of electric charge. 4. Voltage is the electric potential that exists to move a charge. 5. Power is the rate at which electric energy is flowing in a circuit. 6. Ohm’s Law: Power = Voltage x Current. 7. Resistance is a physical property that quantifies how well a charge can move through a material. 8. Ohm’s Law: Voltage
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Forces Sample Problems 1. What is the resultant force on the center charge below? Ans: 0.028 N‚ left q1= +4 C q2= -5 C q3= +6 C d1 to 2= 2 m d2 to 3= 4 m 2. What is the resultant force on the -8 C charge below? Ans: 20.04 N‚ 97.94 q1= +6 C q2 = +10 C q3 = -8 C d1 to 2 = 30 cm d2 to 3 = 20 cm 3. What is the resultant force on the +4 C charge below? Ans: 18.8 N‚ 264.5 q1= +4 C q2 = +6 C q3 = -10 C
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beta decay. Beta decay happens inside the nucleus and is the change of a neutron into a proton and an electron. The electromagnetic force acts between electrically charged particles. This force entails that particles with opposite charges attract‚ while like charges repel. The electromagnetic force has an infinite range and involves the exchange of photons. According to quantum electrodynamics‚ photons work on both the microscopic and macroscopic
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Class X‚ PHYSICS‚ "Electricity" Definitions 1. Insulators Those material objects that do not allow charge to pass through them are known as Insulators or non-conductors. 2. Conductors Those material objects that allow the charge to pass through them are called conductors. 3. Semi Conductors Those material objects that allow some charge to pass through them are called Semi-Conductors. 4. Free Electron Those electrons that are loosely bound by their atom and can move freely
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and the generation of electricity. This module is made up of two lessons: Lesson 1 – Electrostatics Lesson 2 – Electricity What Will You Learn From This Module? After studying this module‚ you should be able to: ♦ ♦ ♦ ♦ ♦ define what an electric charge‚ an electrostatic force‚ electricity‚ a voltage‚ a current and a resistance are; differentiate a conductor from an insulator and a semiconductor; differentiate a series from a parallel connection; differentiate an alternating current from a direct
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Irodov Problem 3.7 As shown in Figure 1‚ the charges are located in at the four corners of the square ABCD whose diagonal is of length 2l. Since the point Xis located at a height of x units from the plane of ABCD along its central axis‚ the distance of X from any of the corners A‚B‚C and D is . The electric field strengths due to each of the four charges located at corners A‚B‚C and D are given by‚ The vertical components of EC and EB will cancel
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This matter is an application for conditional bail your honour. Mrs. Ayoub is a 51 year old divorced woman that lives on her own and has been charged with larceny under section 117‚ common assault under section 61 and resisting arrest‚ under section 58 of the Crimes Act 1900. Your honour‚ I submit my client has neither presumption in favour or against bail as she doesn’t fall under sections 8 to 9. Therefore Mrs. Ayoub has no presumption for bail however‚ under section 13 of the Bail Act‚ my client
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What might you conclude with your observations? The cup and the fur have opposite charges. 3. The forces between charged objects are called electric forces. When a charged object is brought close to the hanging cup‚ the cup is acted on by three forces: gravitational force pulling down‚ the string tension pulling up along the string‚
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